Paper-bag machine.



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-R WN LI UH C DA TM .G A WB Em CP APPLICATION FILED JUNE 29, 1905.

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PATENTBD 0019, 1906.

G. E. & W. T. DULIN. ,l PAPER BAG MACHINE.

APPLICATION IILE'D JUNE 29, 1905.

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@MMM/www arranca# .MM @cmu/f" PATBNTED OCT. 9, 1906.

C. E. & W. T. DULIN.

PAPER BAG MACHINE.

APPLIoATIoN FILED JUNE 29, 1905.

s SHEETS-SHEET a.

No. 832,850. PATBNTED ocT. 9, 1906.

G. E. & W. T.DULN. PAPER BAG MACHINE.

APPLICATION FILED JUNE 29, 1906.

5 SHEETS-SHEET 4.

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No. 882.850. PATENTED UGT. 9. 1906.

. C. & W. T. DULIN.

PAPER BAG MACHINE.

APPLICATION FILED .TUNE 29, 1905.

5 SHEETS-SHEET 5.

@lm/vanto@ M Tm @am UNITED STATES PrrrENr OFFICE.

CHARLES E. DULIN AND WILLIAM T. DULIN, OF NORTH TONAWANDA,

NEW YORK.

PAPER-BAG kMACHINE.

Specification of Letters Patent.

Application led June 29,1905. Serial No. 267,575.

.To all whom it may concern:

Be it known that we, CHARLES E. DULIN and WILLIAM T. DULIN, citizens of the United States, residing at North Tonawanda, Niagara county, State of New York, have invented certain new and useful Improvements in Paper-Bag Machines, of which the following is a specification.

Our invention relates to paper-bag Inachines, and more especially to that class of machines for making paper bags from tubes infolded at the side or, as usually termed, bellows-sided, and our invention relates especially to those parts of such a machine as serve to o'pen the ends of the bellows blanks "and it consists of devices constructed and operated for this purpose, as fully set forth hereinafter and as illustrated in the accompanying drawings, in which- Figure l is a longitudinal ,sectional elevation of sufficient of a paper-bag machine to illustrate our invention. Fig. 2 is a sectional view looking from the end of the machine, showing the devices at one side thereof. Fig. 3 is a transverse sectional elevation, in which, however, the upper portion is carried to a higherposition than it occupies in the machine in order that the illustration of the parts may not be obscured by the lower portion. Figs. 4, 5, and 6 are transverse sectional views illustrating the main features of the opening devices in different positions. Fig. 7 is a perspective view illustrating one form of the bellows-sided blank; and Fig. 8, the same, illustrating the blank opened at the end and defining the position of the clips which grip the side edges of the fold to open the same.

Before describing the details of the mechanism we will refer to the operations upon the paper tube X, which is the well-known bellows-fold tube and which is sheared or torn transversely, so that the under side projects beyond the edge of the upper side, forming a tongue or lip 1, (see Fig. 8,) and in some cases (in the manufacture of cartons to be inserted in boxes) the tube is slit at four points (see Fig. 7,) so as to form four separated tongues 2 3 4 5.

- The purpose of the apparatus of this application is to open up the end of the blank from the position shown in Fig. 7 to the position shown in Fig. 8 and thereafter to further separate or open the upper and lower tongues 2 and 4 in order that proper devices may fold in the tongues or side pieces 3 5, whether the said side pieces are separated by the slits from the other tongues or are not so sepa-` rated, as in the ordinary bellows-sided bagtube.

We do not show or describe' the means for forming the tube with its side folds and severing it and forming the tongues, as these may be of any of the well-known or suitable constructions. Neither do we show the means for folding in the side pieces or tongues 3 5 or for operating upon the other parts to fold and secure together the tongues forming the bottom of the bag, as these may be of any usual or suitable construction, our invention relating to the intermediate devices, which open up the end of the tube.

The blank is carried toward two rolls G D, and the roll D is provided with a center nipper A, which as the end of the blank is presented clamps the tongue or lip l down against the face of the roll D.. The rotation of the roll in the direction of its arrow, Fig. 4, then carries the blank to the left, and while the lower portion of the blank is clamped by the nipper to the surface of the roll D the upper portion enters between a tongue'7 and a blade 8 of a clamping device F, which is capable of both an oscillating and a vertical movement, as stated hereinafter.

When the lip l has been carried to about the position shown in Fig. l, the upper portion of the bag will have been fully introduced into the'clamping device F, and about the time the nipper A releases the lip l the tongue 7 is brought toward the blade 8 to clamp the upper portion of the bag. Before this, however, the lower bellows fold on each side of the bag is clamped by a nipper B at a point just back of the end of the slit a; when the tube isslit or back of the corner-fold when the tube is not slit, and the nipper B retains hold of this portion of the fold until the side of the bag is opened to its full eX- tent. This opening is effected by the downward movement of the nipper B, in connection with nippers I, Which are at the side of the tongue 7 and which clamp the side of the upper fold of the bag at the points indicated in Fig. 8. Thus it will be seen that these two sets of nippers grip the edges of the bel- IOO YOS

lows fold at each side and by their relatively separating movement open the bag until the sides thereof are on practically vertical planes. It then becomes necessary to fold the bag-blank transversely at a point on the line y back of the tongues of the bag, and this is effected by means of the blade 8, which serves, therefore, not only as a clamp, but as a folder-blade. Toeffect this action, the said blade has such a movement that its edge practically travels with the periphery of the roll D after the upper portion of the bag has been clamped between the blade and the tongue 7. Thus, this clamping being effected when the parts are in the position shown in Fig. 1, the continued movement carries the bladeback and its edge with the periphery of lthe roll D downward to the position shown in Fig. 6, thus folding the blank X on a transverse line, the body of the blank resting on the roll D, the upper tongue extending between the blade 8 and the tongue 7. The lower tongue 4 extends downward between the two rolls J K of the bottom-folding mechanism, the continued operation of the rolls feeding the blank downward between the rolls J K, so as to form a sharp crease along Y the line x.

While the parts are in the position shown in Fig. 6, the side blades of the bottoming mechanism (not shown) are operated to fold in the side tongues or parts 3 5, which are then carried folded flat against the lower portion of the blank between the rolls J K. After the parts have reached the position shown in Fig. 6 a vertical downward movement to the position shown in dotted lines is imparted to the clamp F, so that the latter serves to positively carry down the bag to the rolls J K and insure the gripping of the blank thereby, thus preventing any possible clogging of the apparatus, which heretofore has proved to be a difficulty in this class of mechanism in those instances where for some reason the blank has not been seized by the rolls of the bottoming devices.

' Having thus described the general features and operations of the parts, we would state that these features may be combined with various different devices and appliances which would impart the desired movements vthereto at the proper time but we will describe the means which in practical operation have proved to be effective. The clip of the roll D is part of an L-shaped blade projecting through a slot in the roll D and secured to a rock-shaft 10, Figs. 1 and 3, which has a crank-arm 12 at one end carrying a roll 13, which bears upon a stationary cam supported by the framework. A spring 15, connected with the rock-shaft 10 and at the other end with the roll D, tends to rock the shaft to hold the roll 13 against the cam. The nippers B B each consist of a Z-shaped lever pivoted to the shaft 16, carrying the roll D and carried toward the roll by springs 17, which secure a regular and even tension and action of the nippers upon the blank, the said nippers being governed in their movement by annular cams 18, supported by the frame and against which the tails of the levers are caused to bear by the action of the springs 17. The clamp F is supported by trunnions 19, rocking in bearings of a frame L, which swings from a shaft 20, supported in sliding bearings 21, which slide in vertical guides of the frame Q of the machine and to which the vertical sliding motion is imparted from a cam 23, bearing upon a pin 22, carried by a sliding bar 24, guided to'slide vertically. The backward movement of the frame L in order that the edge of the blade 8 may follow the contour of the roll D is effected by means of arms 26 upon the shaft 16 of the roll D, having lugs 27, which as the roll D assumes the position shown in Fig. 1 enter sockets in arms 28, connected to the sides of the blade 8, and as the lugs 27 travel in their curved course they carry downward the arms 28, swinging them with the frame L to the left and rocking the clamp F upon its trunnions.

This action is resisted by springs 30, which v are coiled around extensions of the trunnions 19 and each connected at one end with the side extension and at the other with the bearing of the swinging frame, so that at the grooves 31 in cams 32, secured to the main frame, which grooves receive rolls 33, proj ecting from extensions of the clamp-frame, as illustrated in Fig. 1, and when the roll 33 is at its highest point vertically the frame L will descend vertically, carrying the clamp F from the position shown in Fig. 1 to that shown in dotted lines, Fig. 6. The tongue C has the proper movements imparted to it, as follows: The saiditongue is hung to a rockshaft 35, carried by the rocking frame of the clamp F, which shaft 35 has an arm 36, carrying a roll 37, which b ears against the cam 38, carried by the side frame L, so that the tongue is carried toward the blade 8 as the latter begins to swing downward. A spring 39 tends to carry the tongue toward the blade and maintain the roll 37 in contact with its cam. The nippers I consist of L-shaped arms 41, each hung to a rock-shaft 42, provided with an arm 43, a roll on which bears on the edge of a cam 44, carried by the frame L, and the moment the clamp-frame begins to swing as the arms 28 are carried downward the arms 43 are carried from the upper portions of the cams 44 to the position shownin dotted lines, Fig. 1, thereby closing the nippers l against the blade 8, springs 49 on the rock-shaft 42 holding the arms 43 against the cams. In order to release the grip of the nippers l, the arm 43 passes onto another raised.

IIO

portion 50 ofthe cam 44, Fig. l, which operation occurs as the frame M is swung to carry the parts toward the position shown in Fig. 6.

Withoutv limiting ourselves to the precise Aconstruction and arrangement of parts the blade, and means for positively operating it to clamp the bag to the folding edge of the blade.

2. The combination with the feed-roll of a bag-folder, of a folding-blade pivotally supported at one side of the roll and normally in a position tangential thereto, a movable tongue below and extending to the end of the blade, means for operating the parts to clamp the upper part of a bag between the blade and the tongue with the edge of the blade upon the folding-line of the bag, and means for swinging the blade and tongue to fold the bag close to the edge of the blade as the roll rotates.

3. The combination' with the lower feedroll and clips carried thereby, of a vertically moving frame at one side of the roll, a folding-blade pivotally carried by said frame, clips supported by said blades, and means for operating all of said clips, and a tongue extending beneath the blade to the folding edge thereof, and means for carrying the tongue to and from the blade, as set forth.

4. The combination with the feed-rolls, of an oscillating and reciprocating frame L, an oscillating frame M, and a clamp carried thereby and constructed to clampland fold the bag-blank fed thereto by the rolls, substantially as set forth.

5. The combination with the feed-rolls, of the swinging frame L, means for reciprocating the same vertically, a rocking frame carried by the frame L, a clamp carried by the rocking frame, and arms projecting from the rocking frame and socketed to receive lugs carried with one of the feed-rolls, substantially as set forth. v

6. The `combination with. the verticallyreciprocating and oscillating frame L, of a rocking frame M, a clamp carried thereby, and a cam 32 having slots receiving projections extending from parts of the rocking frame M, substantially as set forth.

7. y The combination with the frame L and rocking frame M and clamp F, of clips I car.

CHARLES E. DULIN. WILLIAM T. DULIN.

Witnesses to signature of Charles E. Dulin:

CHARLES E. FOSTER, B. C. RUST.

Witnesses to signature of W. T. Dulin:

ELIAs ROOT, CHAs. S. CRTON. 

